# Radon Mitigation Grimes, IA | 5-Year Warranty, 24/7

> Radon testing and passive system upgrades for newer Grimes subdivisions. Iowa HHS-credentialed techs and a 5-year warranty.

URL: https://radonmitigationdesmoines.com/service-areas/grimes/

![Radon technician arriving at a central Iowa home with a radon monitor](/images/misc/radon-technician-walking-up-the-driveway-of-a-cent.webp)

location\_on Serving Grimes & nearby areas

# Radon Mitigation in Grimes, IA and Post-Construction Testing

Last updated: October 27, 2026

Grimes has grown fast with newer subdivisions. Many homes have passive radon pipe. If a test reads 4.0 pCi/L or higher, adding a fan and manometer is usually the next step.

-   verifiedIowa HHS credentialed
-   schedule24/7 booking
-   shield5-year warranty

Request a Quote

[/contact/ →](/contact/)

 

phone\_in\_talk (515) 218-7447

[tel:+15152187447 →](tel:+15152187447)

-   verified Iowa HHS Credentialed
-   workspace\_premium NRPP / NRSB Certified Techs
-   shield 5-Year Warranty
-   support\_agent 24/7 Support

Know the risk

## Grimes Radon Mitigation Problems We Fix

The local problem

### A summer test at purchase, then a high first winter in Grimes

**What you notice:** The inspection test looked fine when you bought in July, but a winter reading in the same basement comes back above 4.0 pCi/L.

**Why it happens here:** Grimes nearly doubled between 2010 and 2020, so many owners are in their first or second winter in a young house. Furnace-driven stack effect pulls more soil gas in when the ground freezes.

**How we fix it:** We run a winter radon test with hourly data. If it is high, we activate an existing passive pipe or install a new sub-slab system and retest.

map

### Every Iowa county is EPA Zone 1

About 71% of Iowa homes test above the EPA action level of 4.0 pCi/L. Your neighbor's number tells you little about yours, so a 48-hour test is the only way to know.

ac\_unit

### Winter makes it worse

When the furnace runs and the ground freezes, warm air rises out of the house and pulls soil gas in through the slab, sump and cracks.

real\_estate\_agent

### High results stall closings

A failed radon test during inspection can hold up a sale. We test inside your contingency window and can install and verify a system before closing.

Radon services

## Radon Services for Young Homes and Subdivisions

Testing, mitigation, new construction, commercial and maintenance from one credentialed team. The services most requested here are listed first.

![Continuous radon monitor placed in the lowest lived-in level of a Des Moines home](/images/misc/continuous-radon-monitor-sitting-on-a-small-table-.webp)

monitor\_heart

### Radon Testing

CRM, short-term, long-term, real estate and post-mitigation radon testing by credentialed testers.

View Service arrow\_forward

[Radon Testing →](/radon-testing/)

![New construction home in a Des Moines suburb with a radon pipe stub set before the slab pour](/images/misc/new-construction-home-framing-in-a-waukee-subdivis.webp)

construction

### New Construction Radon Systems

Passive system installs for builders, post-construction testing and passive-to-active upgrades.

View Service arrow\_forward

[New Construction Radon Systems →](/new-construction-radon-systems/)

![Radon mitigation pipe and fan installed on the exterior of a two-story Des Moines home](/images/misc/white-pvc-radon-mitigation-pipe-with-inline-radon-.webp)

home

### Residential Radon Mitigation

Radon systems matched to your foundation: basement sub-slab, crawlspace, exterior, waterborne and vapor intrusion.

View Service arrow\_forward

[Residential Radon Mitigation →](/residential-radon-mitigation/)

![Commercial radon mitigation system on the exterior of an Iowa school building](/images/misc/radon-mitigation-pipes-and-fans-mounted-on-the-ext.webp)

domain

### Commercial Radon Systems

Testing and mitigation for schools, HUD multifamily, offices, warehouses and vapor intrusion sites.

View Service arrow\_forward

[Commercial Radon Systems →](/commercial-radon-systems/)

![Technician replacing a radon fan on the exterior pipe of a Des Moines-area home](/images/misc/radon-technician-on-a-ladder-replacing-an-old-rado.webp)

build

### Radon System Maintenance

Error codes, fans, pipes and joints, and inspections for existing radon systems, including ones we didn't install.

View Service arrow\_forward

[Radon System Maintenance →](/radon-system-maintenance/)

Most local requests start with 

radon testing

[/radon-testing/ →](/radon-testing/)

 or 

new construction radon systems

[/new-construction-radon-systems/ →](/new-construction-radon-systems/)

. Every job is handled by the same Iowa HHS-credentialed crews behind our 

radon mitigation in Des Moines

[/ →](/)

, with the same post-mitigation test and 5-year warranty.

How it works

## Test, Design, Install, Verify

Most single-family homes are finished in one day, and every system is verified before we call it done.

1.  01 monitor\_heart
    
    ### Test
    
    A 48-hour continuous radon monitor test in your home, or send us an existing result.
    
2.  02 architecture
    
    ### Design
    
    We review your foundation, slab sections and sump, then pick suction points and routing.
    
3.  03 construction
    
    ### Install
    
    Credentialed techs install, seal and add a manometer. Most homes take one day.
    
4.  04 fact\_check
    
    ### Verify
    
    A post-mitigation test proves the result, backed by our 5-year warranty.
    

## Not Sure Your Passive Pipe Is Enough?

Send your result and foundation type for a written quote. Every system is verified with a post-mitigation test and covered by our 5-year warranty on systems and installs.

phone\_in\_talk (515) 218-7447

[tel:+15152187447 →](tel:+15152187447)

 

Request a Quote

[/contact/ →](/contact/)

Why choose us

## Why Neighbors Along Highway 141 Choose Us

-   check\_circleContinuous radon monitor testing after move-in
-   check\_circleQuick attic fan activations
-   check\_circleSub-slab systems for homes without passive pipe
-   check\_circleCredentialed technicians on every visit
-   check\_circle5-year warranty on systems and installs
-   check\_circle24/7 support

![Finished radon mitigation system on the side of an Iowa suburban home](/images/features/finished-radon-mitigation-system-with-white-pvc-pi.webp)

Client Verification

## Reviews From Local Homeowners

starstarstarstarstar

> "We bought a house with a system from the old owner. They inspected it, found a cracked coupling in the garage and fixed it the same visit."

Mark H. · Grimes

starstarstarstarstar

> "Passive pipe wasn't enough. They added the fan and the retest dropped way down."

Tara G. · North Grimes

starstarstarstarstar

> "Easy booking, on-time tech and a clear report. Would use them again."

Ben K. · Highway 141 corridor

Read our reviews on Google open\_in\_new

[https://search.google.com/local/reviews?placeid=ChIJRTO3QJee7ocRgEpZOJOW_-U →](https://search.google.com/local/reviews?placeid=ChIJRTO3QJee7ocRgEpZOJOW_-U)

Local knowledge

## Radon Testing and Activation Experience

Local logistics

### Getting to Grimes

Grimes is northwest of our Franklin Ave office. We take Merle Hay Rd or I-35/80 to Highway 141, which runs right through town. North and south Grimes neighborhoods and the downtown area are all an easy drive.

We schedule post-construction tests and activations around your move-in date. Call our 24-hour line to book.

Local homes

### Newer Subdivisions With Passive Pipe

**Passive pipe is common.** Many Grimes homes were built with a passive radon vent stack. It can lower levels some, but often not below the EPA action level of 4.0 pCi/L.

**Test with a continuous radon monitor.** A 48-hour CRM test gives hourly readings and a clear average. If it's 4.0 or higher, activation is the usual next step.

**Activation.** We install a fan on the existing pipe in the attic, wire it, add a U-tube manometer and retest. For homes without passive pipe, we design a standard sub-slab system.

### Local facts that shape the job

-   fact\_check Grimes lies in Polk and Dallas counties and uses ZIP code 50111. 
    
    (en.wikipedia.org)
    
    [https://en.wikipedia.org/wiki/Grimes,_Iowa →](https://en.wikipedia.org/wiki/Grimes,_Iowa)
    
-   fact\_check Grimes nearly doubled from 8,246 residents in 2010 to 15,392 in 2020. 
    
    (en.wikipedia.org)
    
    [https://en.wikipedia.org/wiki/Grimes,_Iowa →](https://en.wikipedia.org/wiki/Grimes,_Iowa)
    
-   fact\_check Iowa Highway 141 passes through the center of the city and Iowa 44 runs along 1st Street. 
    
    (en.wikipedia.org)
    
    [https://en.wikipedia.org/wiki/Grimes,_Iowa →](https://en.wikipedia.org/wiki/Grimes,_Iowa)
    

Where we work

## Neighborhoods and Routes We Cover in Grimes

### Areas served

-   North Grimes
-   South Grimes
-   Downtown Grimes
-   Highway 141 corridor
-   Beaverbrooke
-   Kennybrook
-   Glenstone

ZIP codes we cover: 50111

### Local landmarks

-   location\_onGrimes Community Complex
-   location\_onWater Works Park
-   location\_onGrimes South Sports Complex
-   location\_onGrimes North Sports Complex
-   location\_onGrimes Public Library
-   location\_onBeaverbrooke Park

### How we get there

We take Merle Hay Rd or I-35/80 to Iowa Highway 141, which runs through the middle of Grimes, and use 1st St (Iowa 44) to reach downtown.

Straight Answers

## Grimes Radon FAQs

### Why did my radon level go up in winter?

expand\_more

When the furnace runs and the ground freezes, warm air rises and pulls soil gas through the slab. Many Grimes homes were tested in summer at purchase, so a winter retest gives a truer picture.

### Is the passive radon pipe in my newer home enough?

expand\_more

Not always. Test after move-in with a 48-hour continuous radon monitor. If your level is 4.0 pCi/L or higher, we add an attic fan and manometer to the existing pipe.

### Do you cover both the Polk and Dallas County sides of town?

expand\_more

Yes. We serve north and south Grimes, downtown along 1st St and neighborhoods near Beaverbrooke, Kennybrook and Glenstone parks, reached on Iowa Highway 141.

### Can you inspect a radon system that came with my house?

expand\_more

Yes. We check the fan, manometer and seals on systems from any installer, replace failed fans and retest so you know it still works.

### How much does activation cost compared with a new system?

expand\_more

Activation usually costs less because the pipe is already in place. The price depends on attic access and wiring. Text us a picture of the attic run and your number, and we will price it in writing.

Still have a question?

Our support line answers 24 hours a day, 7 days a week.

phone\_in\_talk (515) 218-7447

[tel:+15152187447 →](tel:+15152187447)

 

Send a Question

[/contact/ →](/contact/)

Nearby service areas

## Also Serving Near Grimes

-   location\_on Johnston
    
    [/service-areas/johnston/ →](/service-areas/johnston/)
    
-   location\_on Urbandale
    
    [/service-areas/urbandale/ →](/service-areas/urbandale/)
    
-   location\_on Waukee
    
    [/service-areas/waukee/ →](/service-areas/waukee/)
    
-   location\_on Polk City
    
    [/service-areas/polk-city/ →](/service-areas/polk-city/)
    
-   All service areas
    
    [/service-areas/ →](/service-areas/)
    

![](/images/hero/radon-technician-loading-white-pvc-pipe-and-radon-.webp)

24/7 booking & support

## Get Radon Mitigation in Grimes Booked

Credentialed testing and mitigation with 24/7 booking, a post-mitigation test and a 5-year warranty on systems and installs.

Request a Quote

[/contact/ →](/contact/)

 

phone\_in\_talk Call (515) 218-7447

[tel:+15152187447 →](tel:+15152187447)

-   verifiedIowa HHS credentialed
-   shield5-year warranty
-   fact\_checkPost-mitigation test